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A collaboration engineer is troubleshooting a delay in call completion on a SIP Cisco Unified Border Element gateway. The gateway is set up for dual stack IP with DNS as the dial peer target. In DNA, AAAA and A records are configured for the target. The engineer determines that IPv4 calls should remain IPv4, when possible, to temporary resolve the issue. The company is testing some IPv6 applications so the engineer cannot disable IPv6 altogether. Which configuration can the engineer apply to the Cisco Unified Border Element to accomplish this temporary fix?